* Create a configuration from the current user details. Can be used for saving.
* @return a <code>Configuration</code>
*/
protected Configuration createConfiguration() {
DefaultConfiguration config = new DefaultConfiguration(IP_RANGE);
new ItemConfiguration().save(this, config);
DefaultConfiguration networkAddressConfig = new DefaultConfiguration(
ELEMENT_NETWORK_ADDRESS);
networkAddressConfig.setValue(getNetworkAddress().getHostAddress());
config.addChild(networkAddressConfig);